Although YouTube and others have streamed plenty of other live events, last weekend's Webcast of more than 60 acts on three separate channels was the biggest example yet of a trend that is radically democratizing the music world.

Dozens of sets from artists like Arcade Fire, Nas, PJ Harvey, and many others are being made available for free. Sunday is your last chance to check out the action from the comfort of home--and with easy access to a bathroom.